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    Título
    Influence of high temperatures on seed germination of a special Pinus pinaster stand adapted to frequent fires
    Autor
    Torres Carretero, Olga
    Calvo Galván, María LeonorAutoridad BuleriaORCID
    Valbuena Relea, María LuzAutoridad BuleriaORCID
    Facultad/Centro
    Facultad de Ciencias Biologicas y Ambientales
    Área de conocimiento
    Ecologia
    Datos de la obra
    Plant Ecology, 2006, vol. 186, n. 1
    Editor
    Springer
    Fecha
    2006-09
    Abstract
    This study examines the effect of fire on the germination of Pinus pinaster seeds from a population with special adaptations to this type of disturbance, due to the high frequency of fires to which they have been subjected. The action of fire was simulated in the laboratory using thermal shocks. Temperatures of 60, 90, 120, 200 and 300 °C were used for exposure times of 1 and 5 min. The viability of seeds of this species from the soil seed bank of a population subjected to a wildfire was also evaluated. The results show that germination is not increase by a thermal treatment. The effect is negative at temperatures above 90 °C and exposure times of 1 min with a significant decrease in, or even no, germination. Therefore the seeds cannot stand high temperatures and reproductive effort is placed on serotinous cone development and the production of high numbers of seeds. The high viability of the seeds from the area burned by wildfire, immediately after the fire and 1 year later, show the high potential of the soil seed bank to contribute to the regeneration of the burned area.
    Materia
    Ecología. Medio ambiente
    Palabras clave
    Fire
    Heat-shock
    Mediterranean pine stand
    Viability
    URI
    http://hdl.handle.net/10612/10837
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